@misc{indiciae6a18d66b5ec6,
  title = {Geochemistry, Nd-Pb Isotopes, and Pb-Pb Ages of the Mesoproterozoic Pea Ridge Iron Oxide-Apatite–Rare Earth Element Deposit, Southeast Missouri},
  author = {Robert A. Ayuso and John F. Slack and Warren C. Day and Anne E. McCafferty},
  year = {2016},
  doi = {10.2113/econgeo.111.8.1935},
  url = {https://pubs.usgs.gov/publication/70191260},
  note = {Source identifier: 70191260}
}